Fig 11. The effect of percent green light on stem length for seven species under two PPFs.

Each data point shows the mean and standard deviation of three replicate studies for each species (n = 3). Some error bars are smaller than the symbol size. See Fig 1 for symbol color and shape legend. To minimize confounding spectral effects the regression line includes only the three treatments with comparable blue and red wavelengths for each PPF. When significant, p-values and percent change are shown.